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Parent Company Only Condensed Financial Statements - Consolidated Statements of Cash Flow (Details) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Share-based compensation | $ 3,452 | $ 3,427 | $ 3,367
Excess tax benefit of share-based compensation | 0 | 0 | (1,327)
Net cash provided by operating activities | 108,808 | 45,791 | 82,521
Cash flows from investing activities: |  |  |
Net cash paid for acquisitions and dispositions | 0 | 4,456 | 0
Net cash used in investing activities | (331,618) | (312,444) | (358,057)
Cash flows from financing activities: |  |  |
Proceeds from the issuance of subordinated notes | 0 | 0 | 48,733
Proceeds from Notes Payable | 2,000 | 10,000 | 0
Repayments of Notes Payable | 0 | 10,000 | 0
Cash dividends paid | (10,845) | (10,249) | (8,211)
Excess tax benefit of share-based compensation | 0 | 0 | 1,327
Payments for Repurchase of Common Stock | 19,387 | 16,636 | 4,889
Net cash provided by financing activities | 266,039 | 221,174 | 380,181
Net increase (decrease) in cash and cash equivalents | 43,229 | (45,479) | 104,645
Cash and cash equivalents, beginning of period | 153,323 | 198,802 | 94,157
Cash and cash equivalents, end of period | $ 196,552 | $ 153,323 | $ 198,802
Noncash transactions: |  |  |
Stock Issued During Period, Shares, Acquisitions | 0 | 141,729 | 0
Parent [Member] |  |  |
Cash flows from operating activities: |  |  |
Net income available to common shareholders | $ 89,217 | $ 48,190 | $ 48,837
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Share-based compensation | 3,452 | 3,427 | 3,367
Net income of subsidiaries | (94,898) | (55,053) | (53,235)
Dividends from subsidiaries | 31,200 | 20,000 | 7,500
Excess tax benefit of share-based compensation | 0 | 0 | (1,327)
Other, net | (953) | (1,806) | 1,848
Net cash provided by operating activities | 28,018 | 14,758 | 6,990
Cash flows from investing activities: |  |  |
Cash contributions to subsidiaries | 0 | 0 | (250)
Net cash paid for acquisitions and dispositions | 0 | (25,187) | 0
Purchases of other investments | (2,729) | (3,679) | (2,435)
Proceeds from distributions on other investments | 1,911 | 1,634 | 1,151
Net cash used in investing activities | (818) | (27,232) | (1,534)
Cash flows from financing activities: |  |  |
Proceeds from the issuance of subordinated notes | 0 | 0 | 48,733
Proceeds from Notes Payable | 2,000 | 10,000 | 0
Repayments of Notes Payable | 0 | 10,000 | 0
Cash dividends paid | (10,845) | (10,249) | (8,211)
Excess tax benefit of share-based compensation | 0 | 0 | 1,327
Payments for Repurchase of Common Stock | 19,387 | 16,636 | 4,889
Payments for the repurchase of equity instruments, net | (2,576) | (2,909) | (2,203)
Net cash provided by financing activities | (30,808) | (29,794) | 34,757
Net increase (decrease) in cash and cash equivalents | (3,608) | (42,268) | 40,213
Cash and cash equivalents, beginning of period | 9,977 | 52,245 | 12,032
Cash and cash equivalents, end of period | $ 6,369 | $ 9,977 | $ 52,245
Noncash transactions: |  |  |
Stock Issued During Period, Shares, Acquisitions | 0 | 141,729 | 0

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